A resistor is a small part in an electric circuit whose job is to resist the flow of current — to make it harder for electricity to pass, so the current falls to a safe or useful level. It is often a little cylinder with coloured rings, or a tiny block on a board.

A resistorA resistor（電阻器） is a small part in an electric circuit whose job is to resist the flow of current是電路裡的一個小零件，它的工作是抵抗電流流動——to make it harder for electricity to pass讓電比較難通過，so the current falls to a safe or useful level使電流降到安全或有用的程度。It is often a little cylinder with coloured rings它通常是一個帶有彩色環的小圓柱體，or a tiny block on a board或是電路板上的一個小方塊。

Physics class and repair shops use the word; it is not a metaphor in ordinary talk. You do not call a stubborn person a resistor.

Physics class and repair shops use the word物理課和維修店會用這個字；it is not a metaphor in ordinary talk在日常對話裡它不是比喻用法。You do not call a stubborn person a resistor你不會把一個固執的人叫做 resistor。

Though actually, people sometimes say resistor when they mean resistance (the property, measured in ohms) or even transistor (a different part, used for switching and amplifying). The -or here names the thing that does the resisting.

Though actually, people sometimes say resistor when they mean resistance (the property, measured in ohms)不過其實，有些人講 resistor 時，心裡想的其實是 resistance（這種以歐姆計量的性質），or even transistor (a different part, used for switching and amplifying)或甚至是 transistor（一種不同的零件，用來切換和放大訊號）。The -or here names the thing that does the resisting這裡的 -or 字尾，指的就是「做出抵抗這件事的東西」。